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National Stock Number:
5305-01-391-4389
Federal Supply Class:
5305
National Item Identification Number:
013914389
Description:
SCREW,CAP,HEXAGON HEAD
Detail:
An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, MACHINE; BOLT, EXTERNALLY RELIEVED BODY; BOLT, INTERNAL WRENCHING; and SCREW, CAP, SOCKET HEAD.
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Manufacturer Information:
| 53A-00-230-3 | 53711 | NAVAL SEA SYSTEMS COMMAND |
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Techincal Specification:
| MINIMUM TENSILE STRENGTH | 80000 POUNDS PER SQUARE INCH | | HEAD HEIGHT | 0.272 INCHES MINIMUM AND | | 0.291 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.612 INCHES MINIMUM AND | | 0.625 INCHES MAXIMUM | | LOCKING FEATURE | STRIP THREADS | | THREAD SERIES DESIGNATOR | UNF | | THREAD LENGTH | 1.900 INCHES MINIMUM AND | | 2.000 INCHES MAXIMUM | | FASTENER LENGTH | 2.000 INCHES NOMINAL | | MATERIAL | PLASTIC POLYAMIDE LOCKING FEATURE | | NICKEL ALLOY 400 FASTENER | | HEAD STYLE | HEXAGON | | THREAD DIRECTION | RIGHT-HAND | | NOMINAL THREAD DIAMETER | 0.437 INCHES | | THREAD QUANTITY PER INCH | 20 | | THREAD CLASS | 2A | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281, CLA FED SPEC SINGLE MATERIAL RESPONSE FASTENER | | FEATURES PROVIDED | FINISHED HEAD |
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